2002-11-27 08:55:35 +00:00
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/* Definition for thread-local data handling. nptl/x86_64 version.
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2021-01-02 19:32:25 +00:00
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Copyright (C) 2002-2021 Free Software Foundation, Inc.
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2002-11-27 08:55:35 +00:00
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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2012-02-09 23:18:22 +00:00
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License along with the GNU C Library; if not, see
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Prefer https to http for gnu.org and fsf.org URLs
Also, change sources.redhat.com to sourceware.org.
This patch was automatically generated by running the following shell
script, which uses GNU sed, and which avoids modifying files imported
from upstream:
sed -ri '
s,(http|ftp)(://(.*\.)?(gnu|fsf|sourceware)\.org($|[^.]|\.[^a-z])),https\2,g
s,(http|ftp)(://(.*\.)?)sources\.redhat\.com($|[^.]|\.[^a-z]),https\2sourceware.org\4,g
' \
$(find $(git ls-files) -prune -type f \
! -name '*.po' \
! -name 'ChangeLog*' \
! -path COPYING ! -path COPYING.LIB \
! -path manual/fdl-1.3.texi ! -path manual/lgpl-2.1.texi \
! -path manual/texinfo.tex ! -path scripts/config.guess \
! -path scripts/config.sub ! -path scripts/install-sh \
! -path scripts/mkinstalldirs ! -path scripts/move-if-change \
! -path INSTALL ! -path locale/programs/charmap-kw.h \
! -path po/libc.pot ! -path sysdeps/gnu/errlist.c \
! '(' -name configure \
-execdir test -f configure.ac -o -f configure.in ';' ')' \
! '(' -name preconfigure \
-execdir test -f preconfigure.ac ';' ')' \
-print)
and then by running 'make dist-prepare' to regenerate files built
from the altered files, and then executing the following to cleanup:
chmod a+x sysdeps/unix/sysv/linux/riscv/configure
# Omit irrelevant whitespace and comment-only changes,
# perhaps from a slightly-different Autoconf version.
git checkout -f \
sysdeps/csky/configure \
sysdeps/hppa/configure \
sysdeps/riscv/configure \
sysdeps/unix/sysv/linux/csky/configure
# Omit changes that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/powerpc/powerpc64/ppc-mcount.S: trailing lines
git checkout -f \
sysdeps/powerpc/powerpc64/ppc-mcount.S \
sysdeps/unix/sysv/linux/s390/s390-64/syscall.S
# Omit change that caused a pre-commit check to fail like this:
# remote: *** error: sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S: last line does not end in newline
git checkout -f sysdeps/sparc/sparc64/multiarch/memcpy-ultra3.S
2019-09-07 05:40:42 +00:00
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<https://www.gnu.org/licenses/>. */
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2002-11-27 08:55:35 +00:00
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#ifndef _TLS_H
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#define _TLS_H 1
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#ifndef __ASSEMBLER__
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2006-04-27 01:25:47 +00:00
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# include <asm/prctl.h> /* For ARCH_SET_FS. */
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2005-01-06 22:40:27 +00:00
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# include <stdbool.h>
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2002-11-27 08:55:35 +00:00
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# include <stddef.h>
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# include <stdint.h>
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2002-12-05 00:44:01 +00:00
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# include <stdlib.h>
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2007-05-19 07:08:23 +00:00
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# include <sysdep.h>
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Narrowing the visibility of libc-internal.h even further.
posix/wordexp-test.c used libc-internal.h for PTR_ALIGN_DOWN; similar
to what was done with libc-diag.h, I have split the definitions of
cast_to_integer, ALIGN_UP, ALIGN_DOWN, PTR_ALIGN_UP, and PTR_ALIGN_DOWN
to a new header, libc-pointer-arith.h.
It then occurred to me that the remaining declarations in libc-internal.h
are mostly to do with early initialization, and probably most of the
files including it, even in the core code, don't need it anymore. Indeed,
only 19 files actually need what remains of libc-internal.h. 23 others
need libc-diag.h instead, and 12 need libc-pointer-arith.h instead.
No file needs more than one of them, and 16 don't need any of them!
So, with this patch, libc-internal.h stops including libc-diag.h as
well as losing the pointer arithmetic macros, and all including files
are adjusted.
* include/libc-pointer-arith.h: New file. Define
cast_to_integer, ALIGN_UP, ALIGN_DOWN, PTR_ALIGN_UP, and
PTR_ALIGN_DOWN here.
* include/libc-internal.h: Definitions of above macros
moved from here. Don't include libc-diag.h anymore either.
* posix/wordexp-test.c: Include stdint.h and libc-pointer-arith.h.
Don't include libc-internal.h.
* debug/pcprofile.c, elf/dl-tunables.c, elf/soinit.c, io/openat.c
* io/openat64.c, misc/ptrace.c, nptl/pthread_clock_gettime.c
* nptl/pthread_clock_settime.c, nptl/pthread_cond_common.c
* string/strcoll_l.c, sysdeps/nacl/brk.c
* sysdeps/unix/clock_settime.c
* sysdeps/unix/sysv/linux/i386/get_clockfreq.c
* sysdeps/unix/sysv/linux/ia64/get_clockfreq.c
* sysdeps/unix/sysv/linux/powerpc/get_clockfreq.c
* sysdeps/unix/sysv/linux/sparc/sparc64/get_clockfreq.c:
Don't include libc-internal.h.
* elf/get-dynamic-info.h, iconv/loop.c
* iconvdata/iso-2022-cn-ext.c, locale/weight.h, locale/weightwc.h
* misc/reboot.c, nis/nis_table.c, nptl_db/thread_dbP.h
* nscd/connections.c, resolv/res_send.c, soft-fp/fmadf4.c
* soft-fp/fmasf4.c, soft-fp/fmatf4.c, stdio-common/vfscanf.c
* sysdeps/ieee754/dbl-64/e_lgamma_r.c
* sysdeps/ieee754/dbl-64/k_rem_pio2.c
* sysdeps/ieee754/flt-32/e_lgammaf_r.c
* sysdeps/ieee754/flt-32/k_rem_pio2f.c
* sysdeps/ieee754/ldbl-128/k_tanl.c
* sysdeps/ieee754/ldbl-128ibm/k_tanl.c
* sysdeps/ieee754/ldbl-96/e_lgammal_r.c
* sysdeps/ieee754/ldbl-96/k_tanl.c, sysdeps/nptl/futex-internal.h:
Include libc-diag.h instead of libc-internal.h.
* elf/dl-load.c, elf/dl-reloc.c, locale/programs/locarchive.c
* nptl/nptl-init.c, string/strcspn.c, string/strspn.c
* malloc/malloc.c, sysdeps/i386/nptl/tls.h
* sysdeps/nacl/dl-map-segments.h, sysdeps/x86_64/atomic-machine.h
* sysdeps/unix/sysv/linux/spawni.c
* sysdeps/x86_64/nptl/tls.h:
Include libc-pointer-arith.h instead of libc-internal.h.
* elf/get-dynamic-info.h, sysdeps/nacl/dl-map-segments.h
* sysdeps/x86_64/atomic-machine.h:
Add multiple include guard.
2017-02-27 01:17:52 +00:00
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# include <libc-pointer-arith.h> /* For cast_to_integer. */
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2007-05-23 20:51:45 +00:00
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# include <kernel-features.h>
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2016-06-20 12:31:40 +00:00
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# include <dl-dtv.h>
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2012-11-03 01:43:27 +00:00
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/* Replacement type for __m128 since this file is included by ld.so,
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which is compiled with -mno-sse. It must not change the alignment
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of rtld_savespace_sse. */
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typedef struct
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{
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int i[4];
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} __128bits;
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2002-11-27 08:55:35 +00:00
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typedef struct
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{
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2007-04-26 04:44:47 +00:00
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void *tcb; /* Pointer to the TCB. Not necessarily the
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2002-11-27 08:55:35 +00:00
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thread descriptor used by libpthread. */
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dtv_t *dtv;
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void *self; /* Pointer to the thread descriptor. */
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2003-06-17 08:58:31 +00:00
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int multiple_threads;
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2007-05-19 07:08:23 +00:00
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int gscope_flag;
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2005-06-26 18:14:26 +00:00
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uintptr_t sysinfo;
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uintptr_t stack_guard;
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2005-12-18 06:58:22 +00:00
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uintptr_t pointer_guard;
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2020-05-15 09:32:30 +00:00
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unsigned long int unused_vgetcpu_cache[2];
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2018-07-14 12:53:05 +00:00
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/* Bit 0: X86_FEATURE_1_IBT.
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Bit 1: X86_FEATURE_1_SHSTK.
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*/
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unsigned int feature_1;
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2018-01-25 04:35:22 +00:00
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int __glibc_unused1;
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2008-12-08 23:30:25 +00:00
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/* Reservation of some values for the TM ABI. */
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2013-05-15 18:20:54 +00:00
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void *__private_tm[4];
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/* GCC split stack support. */
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void *__private_ss;
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2018-07-25 11:39:26 +00:00
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/* The lowest address of shadow stack, */
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unsigned long long int ssp_base;
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Save and restore vector registers in x86-64 ld.so
This patch adds SSE, AVX and AVX512 versions of _dl_runtime_resolve
and _dl_runtime_profile, which save and restore the first 8 vector
registers used for parameter passing. elf_machine_runtime_setup
selects the proper _dl_runtime_resolve or _dl_runtime_profile based
on _dl_x86_cpu_features. It avoids race condition caused by
FOREIGN_CALL macros, which are only used for x86-64.
Performance impact of saving and restoring 8 vector registers are
negligible on Nehalem, Sandy Bridge, Ivy Bridge and Haswell when
ld.so is optimized with SSE2.
[BZ #15128]
* sysdeps/x86_64/Makefile [$(subdir) == elf] (tests): Add
ifuncmain8.
(modules-names): Add ifuncmod8.
($(objpfx)ifuncmain8): New rule.
* sysdeps/x86_64/dl-machine.h: Include <dl-procinfo.h> and
<cpuid.h>.
(elf_machine_runtime_setup): Use _dl_runtime_resolve_sse,
_dl_runtime_resolve_avx, or _dl_runtime_resolve_avx512,
_dl_runtime_profile_sse, _dl_runtime_profile_avx, or
_dl_runtime_profile_avx512, based on HAS_ARCH_FEATURE.
* sysdeps/x86_64/dl-trampoline.S: Rewrite.
* sysdeps/x86_64/dl-trampoline.h: Likewise.
* sysdeps/x86_64/ifuncmain8.c: New file.
* sysdeps/x86_64/ifuncmod8.c: Likewise.
* sysdeps/x86_64/nptl/tcb-offsets.sym (RTLD_SAVESPACE_SSE):
Removed.
* sysdeps/x86_64/nptl/tls.h (__128bits): Removed.
(tcbhead_t): Change rtld_must_xmm_save to __glibc_unused1.
Change rtld_savespace_sse to __glibc_unused2.
(RTLD_CHECK_FOREIGN_CALL): Removed.
(RTLD_ENABLE_FOREIGN_CALL): Likewise.
(RTLD_PREPARE_FOREIGN_CALL): Likewise.
(RTLD_FINALIZE_FOREIGN_CALL): Likewise.
2015-08-25 11:33:54 +00:00
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/* Must be kept even if it is no longer used by glibc since programs,
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like AddressSanitizer, depend on the size of tcbhead_t. */
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__128bits __glibc_unused2[8][4] __attribute__ ((aligned (32)));
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2009-07-29 15:33:03 +00:00
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void *__padding[8];
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2002-11-27 08:55:35 +00:00
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} tcbhead_t;
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2003-06-17 08:58:31 +00:00
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2018-06-12 13:23:28 +00:00
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# ifdef __ILP32__
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/* morestack.S in libgcc uses offset 0x40 to access __private_ss, */
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_Static_assert (offsetof (tcbhead_t, __private_ss) == 0x40,
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"offset of __private_ss != 0x40");
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2018-07-25 11:39:26 +00:00
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/* NB: ssp_base used to be "long int __glibc_reserved2", which was
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changed from 32 bits to 64 bits. Make sure that the offset of the
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next field, __glibc_unused2, is unchanged. */
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_Static_assert (offsetof (tcbhead_t, __glibc_unused2) == 0x60,
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"offset of __glibc_unused2 != 0x60");
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2018-06-12 13:23:28 +00:00
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# else
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/* morestack.S in libgcc uses offset 0x70 to access __private_ss, */
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_Static_assert (offsetof (tcbhead_t, __private_ss) == 0x70,
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"offset of __private_ss != 0x70");
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2018-07-25 11:39:26 +00:00
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_Static_assert (offsetof (tcbhead_t, __glibc_unused2) == 0x80,
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"offset of __glibc_unused2 != 0x80");
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2018-06-12 13:23:28 +00:00
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# endif
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2003-03-12 20:03:07 +00:00
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#else /* __ASSEMBLER__ */
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# include <tcb-offsets.h>
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2002-11-27 08:55:35 +00:00
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#endif
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/* Alignment requirement for the stack. */
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#define STACK_ALIGN 16
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#ifndef __ASSEMBLER__
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/* Get system call information. */
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# include <sysdep.h>
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2020-11-13 14:19:41 +00:00
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#define LOCK_PREFIX "lock;"
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2003-04-14 17:30:34 +00:00
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2005-05-21 19:01:22 +00:00
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/* This is the size of the initial TCB. Can't be just sizeof (tcbhead_t),
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because NPTL getpid, __libc_alloca_cutoff etc. need (almost) the whole
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struct pthread even when not linked with -lpthread. */
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# define TLS_INIT_TCB_SIZE sizeof (struct pthread)
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2002-11-27 08:55:35 +00:00
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/* Alignment requirements for the initial TCB. */
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2005-05-21 19:01:22 +00:00
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# define TLS_INIT_TCB_ALIGN __alignof__ (struct pthread)
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2002-11-27 08:55:35 +00:00
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/* This is the size of the TCB. */
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# define TLS_TCB_SIZE sizeof (struct pthread)
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/* Alignment requirements for the TCB. */
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2010-10-14 02:12:03 +00:00
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# define TLS_TCB_ALIGN __alignof__ (struct pthread)
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2002-11-27 08:55:35 +00:00
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/* The TCB can have any size and the memory following the address the
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thread pointer points to is unspecified. Allocate the TCB there. */
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# define TLS_TCB_AT_TP 1
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2014-03-14 17:44:34 +00:00
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# define TLS_DTV_AT_TP 0
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/* Get the thread descriptor definition. */
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# include <nptl/descr.h>
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2002-11-27 08:55:35 +00:00
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/* Install the dtv pointer. The pointer passed is to the element with
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index -1 which contain the length. */
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# define INSTALL_DTV(descr, dtvp) \
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2003-03-10 08:50:36 +00:00
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((tcbhead_t *) (descr))->dtv = (dtvp) + 1
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2002-11-27 08:55:35 +00:00
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/* Install new dtv for current thread. */
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2003-03-10 08:50:36 +00:00
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# define INSTALL_NEW_DTV(dtvp) \
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2002-11-27 08:55:35 +00:00
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({ struct pthread *__pd; \
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2003-03-14 22:34:02 +00:00
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THREAD_SETMEM (__pd, header.dtv, (dtvp)); })
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2002-11-27 08:55:35 +00:00
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/* Return dtv of given thread descriptor. */
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# define GET_DTV(descr) \
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(((tcbhead_t *) (descr))->dtv)
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/* Code to initially initialize the thread pointer. This might need
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special attention since 'errno' is not yet available and if the
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operation can cause a failure 'errno' must not be touched.
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We have to make the syscall for both uses of the macro since the
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address might be (and probably is) different. */
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2014-05-13 14:40:41 +00:00
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# define TLS_INIT_TP(thrdescr) \
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2002-11-27 08:55:35 +00:00
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({ void *_thrdescr = (thrdescr); \
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tcbhead_t *_head = _thrdescr; \
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int _result; \
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\
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_head->tcb = _thrdescr; \
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/* For now the thread descriptor is at the same address. */ \
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_head->self = _thrdescr; \
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\
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/* It is a simple syscall to set the %fs value for the thread. */ \
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asm volatile ("syscall" \
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: "=a" (_result) \
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: "0" ((unsigned long int) __NR_arch_prctl), \
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"D" ((unsigned long int) ARCH_SET_FS), \
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2003-03-11 22:02:29 +00:00
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"S" (_thrdescr) \
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2002-11-27 08:55:35 +00:00
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: "memory", "cc", "r11", "cx"); \
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\
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2002-12-06 11:15:07 +00:00
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_result ? "cannot set %fs base address for thread-local storage" : 0; \
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})
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2002-11-27 08:55:35 +00:00
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2014-06-09 19:52:55 +00:00
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# define TLS_DEFINE_INIT_TP(tp, pd) void *tp = (pd)
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2002-11-27 08:55:35 +00:00
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/* Return the address of the dtv for the current thread. */
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# define THREAD_DTV() \
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({ struct pthread *__pd; \
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2003-03-14 22:34:02 +00:00
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THREAD_GETMEM (__pd, header.dtv); })
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2002-11-27 08:55:35 +00:00
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/* Return the thread descriptor for the current thread.
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The contained asm must *not* be marked volatile since otherwise
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assignments like
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2009-08-25 17:42:30 +00:00
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pthread_descr self = thread_self();
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2002-11-27 08:55:35 +00:00
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do not get optimized away. */
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2020-12-03 12:33:44 +00:00
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# if __GNUC_PREREQ (6, 0)
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# define THREAD_SELF \
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(*(struct pthread *__seg_fs *) offsetof (struct pthread, header.self))
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# else
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# define THREAD_SELF \
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2002-11-27 08:55:35 +00:00
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({ struct pthread *__self; \
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2012-05-11 17:13:54 +00:00
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asm ("mov %%fs:%c1,%0" : "=r" (__self) \
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2003-03-14 22:34:02 +00:00
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: "i" (offsetof (struct pthread, header.self))); \
|
2002-11-27 08:55:35 +00:00
|
|
|
__self;})
|
2020-12-03 12:33:44 +00:00
|
|
|
# endif
|
2002-11-27 08:55:35 +00:00
|
|
|
|
2003-09-09 07:01:01 +00:00
|
|
|
/* Magic for libthread_db to know how to do THREAD_SELF. */
|
|
|
|
# define DB_THREAD_SELF_INCLUDE <sys/reg.h> /* For the FS constant. */
|
|
|
|
# define DB_THREAD_SELF CONST_THREAD_AREA (64, FS)
|
2002-11-27 08:55:35 +00:00
|
|
|
|
|
|
|
/* Read member of the thread descriptor directly. */
|
|
|
|
# define THREAD_GETMEM(descr, member) \
|
|
|
|
({ __typeof (descr->member) __value; \
|
2020-02-16 23:40:39 +00:00
|
|
|
_Static_assert (sizeof (__value) == 1 \
|
2020-02-17 10:08:15 +00:00
|
|
|
|| sizeof (__value) == 4 \
|
|
|
|
|| sizeof (__value) == 8, \
|
|
|
|
"size of per-thread data"); \
|
2002-11-27 08:55:35 +00:00
|
|
|
if (sizeof (__value) == 1) \
|
2003-03-14 09:45:53 +00:00
|
|
|
asm volatile ("movb %%fs:%P2,%b0" \
|
|
|
|
: "=q" (__value) \
|
|
|
|
: "0" (0), "i" (offsetof (struct pthread, member))); \
|
2002-11-27 08:55:35 +00:00
|
|
|
else if (sizeof (__value) == 4) \
|
2003-03-14 09:45:53 +00:00
|
|
|
asm volatile ("movl %%fs:%P1,%0" \
|
|
|
|
: "=r" (__value) \
|
|
|
|
: "i" (offsetof (struct pthread, member))); \
|
2020-02-16 23:40:39 +00:00
|
|
|
else /* 8 */ \
|
2002-11-27 08:55:35 +00:00
|
|
|
{ \
|
2003-03-14 09:45:53 +00:00
|
|
|
asm volatile ("movq %%fs:%P1,%q0" \
|
|
|
|
: "=r" (__value) \
|
|
|
|
: "i" (offsetof (struct pthread, member))); \
|
2002-11-27 08:55:35 +00:00
|
|
|
} \
|
|
|
|
__value; })
|
|
|
|
|
|
|
|
|
|
|
|
/* Same as THREAD_GETMEM, but the member offset can be non-constant. */
|
|
|
|
# define THREAD_GETMEM_NC(descr, member, idx) \
|
|
|
|
({ __typeof (descr->member[0]) __value; \
|
2020-02-16 23:40:39 +00:00
|
|
|
_Static_assert (sizeof (__value) == 1 \
|
2020-02-17 10:08:15 +00:00
|
|
|
|| sizeof (__value) == 4 \
|
|
|
|
|| sizeof (__value) == 8, \
|
|
|
|
"size of per-thread data"); \
|
2002-11-27 08:55:35 +00:00
|
|
|
if (sizeof (__value) == 1) \
|
2003-03-14 09:45:53 +00:00
|
|
|
asm volatile ("movb %%fs:%P2(%q3),%b0" \
|
|
|
|
: "=q" (__value) \
|
|
|
|
: "0" (0), "i" (offsetof (struct pthread, member[0])), \
|
|
|
|
"r" (idx)); \
|
2002-11-27 08:55:35 +00:00
|
|
|
else if (sizeof (__value) == 4) \
|
2003-03-14 09:45:53 +00:00
|
|
|
asm volatile ("movl %%fs:%P1(,%q2,4),%0" \
|
|
|
|
: "=r" (__value) \
|
|
|
|
: "i" (offsetof (struct pthread, member[0])), "r" (idx));\
|
2020-02-16 23:40:39 +00:00
|
|
|
else /* 8 */ \
|
2002-11-27 08:55:35 +00:00
|
|
|
{ \
|
2003-03-14 09:45:53 +00:00
|
|
|
asm volatile ("movq %%fs:%P1(,%q2,8),%q0" \
|
|
|
|
: "=r" (__value) \
|
|
|
|
: "i" (offsetof (struct pthread, member[0])), \
|
|
|
|
"r" (idx)); \
|
2002-11-27 08:55:35 +00:00
|
|
|
} \
|
|
|
|
__value; })
|
|
|
|
|
|
|
|
|
2003-04-12 20:32:01 +00:00
|
|
|
/* Loading addresses of objects on x86-64 needs to be treated special
|
|
|
|
when generating PIC code. */
|
|
|
|
#ifdef __pic__
|
|
|
|
# define IMM_MODE "nr"
|
|
|
|
#else
|
|
|
|
# define IMM_MODE "ir"
|
|
|
|
#endif
|
|
|
|
|
|
|
|
|
2015-03-28 04:31:56 +00:00
|
|
|
/* Set member of the thread descriptor directly. */
|
2002-11-27 08:55:35 +00:00
|
|
|
# define THREAD_SETMEM(descr, member, value) \
|
2020-02-16 23:40:39 +00:00
|
|
|
({ \
|
|
|
|
_Static_assert (sizeof (descr->member) == 1 \
|
2020-02-17 10:08:15 +00:00
|
|
|
|| sizeof (descr->member) == 4 \
|
|
|
|
|| sizeof (descr->member) == 8, \
|
|
|
|
"size of per-thread data"); \
|
2020-02-16 23:40:39 +00:00
|
|
|
if (sizeof (descr->member) == 1) \
|
2003-03-12 05:45:00 +00:00
|
|
|
asm volatile ("movb %b0,%%fs:%P1" : \
|
2002-11-27 08:55:35 +00:00
|
|
|
: "iq" (value), \
|
|
|
|
"i" (offsetof (struct pthread, member))); \
|
|
|
|
else if (sizeof (descr->member) == 4) \
|
|
|
|
asm volatile ("movl %0,%%fs:%P1" : \
|
2003-04-12 20:32:01 +00:00
|
|
|
: IMM_MODE (value), \
|
2002-11-27 08:55:35 +00:00
|
|
|
"i" (offsetof (struct pthread, member))); \
|
2020-02-16 23:40:39 +00:00
|
|
|
else /* 8 */ \
|
2002-11-27 08:55:35 +00:00
|
|
|
{ \
|
2021-03-16 14:41:46 +00:00
|
|
|
/* Since movq takes a signed 32-bit immediate or a register source \
|
|
|
|
operand, use "er" constraint for 32-bit signed integer constant \
|
|
|
|
or register. */ \
|
2003-03-12 05:45:00 +00:00
|
|
|
asm volatile ("movq %q0,%%fs:%P1" : \
|
2021-03-16 14:41:46 +00:00
|
|
|
: "er" ((uint64_t) cast_to_integer (value)), \
|
2002-11-27 08:55:35 +00:00
|
|
|
"i" (offsetof (struct pthread, member))); \
|
|
|
|
}})
|
|
|
|
|
|
|
|
|
2015-03-28 04:31:56 +00:00
|
|
|
/* Same as THREAD_SETMEM, but the member offset can be non-constant. */
|
2002-11-27 08:55:35 +00:00
|
|
|
# define THREAD_SETMEM_NC(descr, member, idx, value) \
|
2020-02-16 23:40:39 +00:00
|
|
|
({ \
|
|
|
|
_Static_assert (sizeof (descr->member[0]) == 1 \
|
2020-02-17 10:08:15 +00:00
|
|
|
|| sizeof (descr->member[0]) == 4 \
|
|
|
|
|| sizeof (descr->member[0]) == 8, \
|
|
|
|
"size of per-thread data"); \
|
2020-02-16 23:40:39 +00:00
|
|
|
if (sizeof (descr->member[0]) == 1) \
|
2003-03-12 05:45:00 +00:00
|
|
|
asm volatile ("movb %b0,%%fs:%P1(%q2)" : \
|
2002-11-27 08:55:35 +00:00
|
|
|
: "iq" (value), \
|
|
|
|
"i" (offsetof (struct pthread, member[0])), \
|
|
|
|
"r" (idx)); \
|
|
|
|
else if (sizeof (descr->member[0]) == 4) \
|
2003-03-12 05:45:00 +00:00
|
|
|
asm volatile ("movl %0,%%fs:%P1(,%q2,4)" : \
|
2003-04-12 20:32:01 +00:00
|
|
|
: IMM_MODE (value), \
|
2002-11-27 08:55:35 +00:00
|
|
|
"i" (offsetof (struct pthread, member[0])), \
|
|
|
|
"r" (idx)); \
|
2020-02-16 23:40:39 +00:00
|
|
|
else /* 8 */ \
|
2002-11-27 08:55:35 +00:00
|
|
|
{ \
|
2021-03-16 14:41:46 +00:00
|
|
|
/* Since movq takes a signed 32-bit immediate or a register source \
|
|
|
|
operand, use "er" constraint for 32-bit signed integer constant \
|
|
|
|
or register. */ \
|
2003-03-12 05:45:00 +00:00
|
|
|
asm volatile ("movq %q0,%%fs:%P1(,%q2,8)" : \
|
2021-03-16 14:41:46 +00:00
|
|
|
: "er" ((uint64_t) cast_to_integer (value)), \
|
2002-11-27 08:55:35 +00:00
|
|
|
"i" (offsetof (struct pthread, member[0])), \
|
|
|
|
"r" (idx)); \
|
|
|
|
}})
|
|
|
|
|
|
|
|
|
2005-06-26 18:14:26 +00:00
|
|
|
/* Set the stack guard field in TCB head. */
|
|
|
|
# define THREAD_SET_STACK_GUARD(value) \
|
|
|
|
THREAD_SETMEM (THREAD_SELF, header.stack_guard, value)
|
|
|
|
# define THREAD_COPY_STACK_GUARD(descr) \
|
|
|
|
((descr)->header.stack_guard \
|
|
|
|
= THREAD_GETMEM (THREAD_SELF, header.stack_guard))
|
|
|
|
|
2005-12-18 06:58:22 +00:00
|
|
|
|
|
|
|
/* Set the pointer guard field in the TCB head. */
|
2009-07-29 15:33:03 +00:00
|
|
|
# define THREAD_SET_POINTER_GUARD(value) \
|
2005-12-18 06:58:22 +00:00
|
|
|
THREAD_SETMEM (THREAD_SELF, header.pointer_guard, value)
|
2009-07-29 15:33:03 +00:00
|
|
|
# define THREAD_COPY_POINTER_GUARD(descr) \
|
2005-12-18 06:58:22 +00:00
|
|
|
((descr)->header.pointer_guard \
|
|
|
|
= THREAD_GETMEM (THREAD_SELF, header.pointer_guard))
|
|
|
|
|
|
|
|
|
2007-05-19 07:08:23 +00:00
|
|
|
/* Get and set the global scope generation counter in the TCB head. */
|
2018-03-04 18:11:26 +00:00
|
|
|
# define THREAD_GSCOPE_IN_TCB 1
|
2009-07-29 15:33:03 +00:00
|
|
|
# define THREAD_GSCOPE_FLAG_UNUSED 0
|
|
|
|
# define THREAD_GSCOPE_FLAG_USED 1
|
|
|
|
# define THREAD_GSCOPE_FLAG_WAIT 2
|
|
|
|
# define THREAD_GSCOPE_RESET_FLAG() \
|
2007-05-19 07:08:23 +00:00
|
|
|
do \
|
|
|
|
{ int __res; \
|
|
|
|
asm volatile ("xchgl %0, %%fs:%P1" \
|
|
|
|
: "=r" (__res) \
|
|
|
|
: "i" (offsetof (struct pthread, header.gscope_flag)), \
|
|
|
|
"0" (THREAD_GSCOPE_FLAG_UNUSED)); \
|
|
|
|
if (__res == THREAD_GSCOPE_FLAG_WAIT) \
|
2007-07-28 20:16:07 +00:00
|
|
|
lll_futex_wake (&THREAD_SELF->header.gscope_flag, 1, LLL_PRIVATE); \
|
2007-05-19 07:08:23 +00:00
|
|
|
} \
|
|
|
|
while (0)
|
2009-07-29 15:33:03 +00:00
|
|
|
# define THREAD_GSCOPE_SET_FLAG() \
|
2007-05-19 07:08:23 +00:00
|
|
|
THREAD_SETMEM (THREAD_SELF, header.gscope_flag, THREAD_GSCOPE_FLAG_USED)
|
|
|
|
|
2002-11-27 08:55:35 +00:00
|
|
|
#endif /* __ASSEMBLER__ */
|
|
|
|
|
|
|
|
#endif /* tls.h */
|